package com.itheima.user.service.impl;

import com.itheima.common.constant.MessageConstant;
import com.itheima.common.entity.Result;
import com.itheima.common.utils.DateUtils;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.user.mapper.MemberMapper;
import com.itheima.user.mapper.OrderMapper;
import com.itheima.user.mapper.OrderSettingMapper;
import com.itheima.user.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
@Transactional
public class OrderServiceImpl implements OrderService {

        @Autowired
        private OrderSettingMapper orderSettingMapper;
        @Autowired
        private MemberMapper memberMapper;
        @Autowired
        private OrderMapper orderMapper;

        //体检预约
        public Result order(Map map) throws Exception {
            //检查当前日期是否进行了预约设置
            String orderDate = (String) map.get("orderDate");
            Date date = DateUtils.parseString2Date(orderDate);
            OrderSetting orderSetting = orderSettingMapper.findByOrderDate(date);
            if(orderSetting == null){
                return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
            }

            //检查预约日期是否预约已满
            int number = orderSetting.getNumber();//可预约人数
            int reservations = orderSetting.getReservations();//已预约人数
            if(reservations >= number){
                //预约已满，不能预约
                return new Result(false,MessageConstant.ORDER_FULL);
            }

            //检查当前用户是否为会员，根据手机号判断
            String telephone = (String) map.get("telephone");
            Member member = memberMapper.findByTelephone(telephone);
            //防止重复预约
            if(member != null){
                Integer memberId = member.getId();
                int setmealId = Integer.parseInt((String) map.get("setmealId"));
                Order order = new Order(memberId,date,null,null,setmealId);
                List<Order> list = orderMapper.findByCondition(order);
                if(list != null && list.size() > 0){
                    //已经完成了预约，不能重复预约
                    return new Result(false, MessageConstant.HAS_ORDERED);
                }
            }

            //可以预约，设置预约人数加一
            orderSetting.setReservations(orderSetting.getReservations()+1);
            orderSettingMapper.editReservationsByOrderDate(orderSetting);

            if(member == null){
                //当前用户不是会员，需要添加到会员表
                member = new Member();
                member.setName((String) map.get("name"));
                member.setPhoneNumber(telephone);
                member.setIdCard((String) map.get("idCard"));
                member.setSex((String) map.get("sex"));
                member.setRegTime(new Date());
                memberMapper.add(member);
            }

            //保存预约信息到预约表
            Order order = new Order(member.getId(),
                    date,
                    (String)map.get("orderType"),
                    Order.ORDERSTATUS_NO,
                    Integer.parseInt((String) map.get("setmealId")));
            orderMapper.add(order);

            return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
        }

    //根据id查询预约信息，包括体检人信息、套餐信息
    public Map findById(Integer id) throws Exception {
        Map map = orderMapper.findById4Detail(id);
        if(map != null){
            //处理日期格式
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate",DateUtils.parseDate2String(orderDate));
        }
        return map;
    }
}
